Spring shade-roller



(No Model.)

S. HARTSHORN.

SPRING SHADE ROLLER. No. 320,247. Patented June 16, 1885.

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Nrrnn STATES STEV ART HARTSHORN, OF MILLBURN, NEW JERSEY.

SPRING SHADE-ROLLER.

SPECIFICATION forming part of Letters Patent No. 320,247, dated June 16,1885.

A pplicntinn filed August 6, 1894.

To all whom it may concern:

Be it known that I, STFAVAR'J. HARTSHORN, residing in Millburn, in thecounty of Essex in the State of New Jersey, have invented a certain newand useful Improvement in Spring Shade-Rollers, of which the followingis a full, clear, and exact description, reference being had to theaccompanying drawings, making a part of this specification.

My invention relates to a new and improved mode of attaching the endplate or disk on which the pawls or their equivalents are usuallymounted to the roller; and also refers to a ready and effective means ofsecuring the outer end of the spring to the end plate.

In the drawings illustrating my improvements,in which like lettersindicate like parts, Figure 1 is a view of a roller, showing the endplate fastened to the same by my improved method, a part of the rollerbeing broken away to show the mode of attachment. Fig. 2 is a detachedview of the end plate, showing the screw collar by which it is attachedto the roller. Fig. 3 is a view of the end plate, the spindle connectedwith the same, and the spring mounted upon the latter and secured at itsouter end to the end plate by means of the screw on the collar of thelatter. Fig. 4 is a view of a modified construct-ion of the end plate,showing an outer collar or ring to prevent the roller splitting.

My invention consists in a novel method of constructing the end plate ordisk by which it can be readily and quickly attached directly to theroller, and held firmly secured thereto without the use of any separatemeans of fastening, as nails, screws, or a retaining-cap or ferrulefrequently employed for this purpose.

In my improved method of construction, the end plate is provided on itsinner face with a collar or ring, 0, either cast or formed with theplate, or made separate and attached to the same. This collar is of sucha diameter compared with the diameter of the bore in the roller that itwill enter the roller and permit the end plate to fit closely againstthe end of the latter, as will be seen in Fig. 1. On

the outside of this collar is formed a screw, as shown in the drawings,the thread of which (No model.)

is such that when the collar is inserted in the bore, and the end plateturned, the screw will bite into or enter the wood of the roller. Thisscrew may be cast with the collar, or may be cut in the latter, orformed in any manner found convenient, and instead of being continuousaround the collar the screw may be formed by a series of detachedthreads or seg ments or projections. \Vhen the thread is to be cut orformed on the collar after the latter is made, the diameter of thecollar should be a little greater than that of the bore of the roller,so the screw will enter and take hold of the wood. The end plate thusconstructed is attached to the roller by simply screwing the collar intothe bore of the latter, when it will be firmly and securely held withoutany other fastening.

The connection of the spindle with the end plate, and attachment of thespring to the spindle and to the end plate or roller, and thearrangement of the spindle and spring within the roller, may be by anyof the methods now in use with the ordinary construction of end plates.The outer end of the spring,when the inner end is fastened to thespindle, may be connected to the end platein any manner, and the endplate, spindle, and spring mounted thereon may all be united together,as is shown in Fig. 3, and connected with the roller by simply insertingthe spindle and spring within the bore, and screwing the collar on theend plate into the latter. Thus, by my improvement, I provide on the endplate itself a ready and effective method of attaching the plate to theroller, and avoid all the trouble and annoyance caused by the use ofnails or screws to fasten the plate, and do away wit-h the use of aferrule or cap on the end of the roller for this purpose; and, moreover,by my improved method of fastening, the end plate cannot become detachedfrom the roller while in use, as frequently happens with the mode ofattachment now employed, and yet, if oocasion requires, the plate can bereadily re- 5 Fig. 4,) may be formed on the edge of the inner face ofthe disk or plate, so as to surround or fit overthe end of the roller,and protect the same from injury.

My improved construction of end plate also furnishes a ready and securemethod of attaching the outer end of thespring to the end plate androller.

' with or affected. By this method of securing the. spring, the lattercan be used just as it comes from or leaves the mandrel, Without anymanipulation or preparation whatever.

I am aware that a cap carrying the roller bearing or a shell has beenattached to the roller by a screw-thread formed on the inside surface ofsuch cap; and also that the spring has been attached to the end plate bymeans of a smooth or unthreaded collar, as shown in Letters Patentgranted to me February 19, 1884, and numbered 293,871.

What is claimed as new is- 1. In a spring shade roller, the combination,with the roller, of the end plate having a screw-thread collar centrallythereon for entering the bore of the roller, substantially as and forthe purpose described.

2. In spring shade-rollers, the combination, with the roller, of the endplate having a central screw-collar for attaching the same to the rollerand spindle and spring, the latter being attached by its inner end tothe spindle and by its outer end to the end plate by the screwthread onthe collar.

v STEWART HARTSHORN.

Witnesses:

GHAs; H. DILLEY, FRANCIS L. GRoss.

